Mineral Insulated (MI) cables are a highly specialized solution designed for environments where performance, safety, and durability are paramount. Constructed using inorganic materials such as copper and magnesium oxide (MgO), these cables deliver unparalleled reliability and functionality in demanding conditions. Their unique properties make them an ideal choice for a wide range of industries, including power generation, oil and gas, petrochemical, construction, and more.

What Are Mineral Insulated Cables?

MI cables feature conductors or wires encased in a seamless metal sheath and insulated with compressed MgO. This structure provides:

Exceptional Thermal Stability: Capable of withstanding high temperatures without degradation.

Superior Electrical Insulation: Ensures reliable performance under high voltage and thermal stress.

Outstanding Mechanical Protection: Protects internal conductors against harsh physical environments.

Advantages of Mineral Insulated Cables

1. Fire Resistance

MI cables are inherently fireproof, with non-combustible insulation that emits no smoke or toxic gases during exposure to high temperatures. This makes them ideal for fire-critical applications like hospitals, nuclear plants, and emergency systems.

2. Enhanced Durability

Low Flammability: Withstands extreme heat without compromising performance.

Corrosion Resistance: Metal sheaths protect against moisture, chemicals, and oxidative damage, ensuring long-term reliability in aggressive environments.

3. High Current-Carrying Capacity

MI cables are certified for transmitting higher power in smaller spaces, optimizing design flexibility while maintaining efficiency.

4. Ease of Installation and Versatility

Flexible enough to be bent and shaped on-site without compromising structural integrity.

Suitable for retrofitting projects due to compatibility with other cable types and their compact size.

5. Safety and Precision

MI cables provide unmatched protection for critical systems, such as temperature sensors and control lines, ensuring accurate data transmission in high-stakes environments.

Applications of Mineral Insulated Cables

1. Power Transmission in Harsh Environments

MI cables are commonly used in facilities like power plants and refineries, where high temperatures and corrosive substances pose challenges for conventional cables.

2. Fire and Safety Systems

They are the preferred choice for emergency lighting, fire alarms, and sprinkler systems, thanks to their ability to operate under fire conditions without failure.

3. Nuclear and Petrochemical Industries

MI cables are essential in nuclear power plants for monitoring core temperatures and ensuring system integrity in hazardous conditions.

4. Oil and Gas Sector

Their resistance to chemicals and moisture makes them a reliable option for offshore rigs, pipelines, and processing facilities.

5. Critical Medical Equipment

Ensuring uninterrupted power supply and precise measurements, MI cables are indispensable in healthcare settings like operating rooms and diagnostic laboratories.

Why Choose Our Mineral Insulated Cables?

At Tongda, we specialize in providing high-quality MI cables tailored to meet the demands of industrial and commercial applications. Our cables are manufactured with strict adherence to international safety standards, ensuring:

Unmatched Performance: Superior thermal and electrical properties for long-lasting efficiency.

Customized Solutions: Options for various configurations, sizes, and sheath materials to suit specific project needs.

Expert Support: Comprehensive guidance for installation, maintenance, and compliance requirements.

Contact us today for tailored solutions that meet your project’s exacting standards.